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2917289 is a prime number
BaseRepresentation
bin1011001000001110101001
312111012202202
423020032221
51221323124
6142305545
733540134
oct13101651
95435682
102917289
111712891
12b882b5
137b1b0b
1455d21b
153c95ae
hex2c83a9

2917289 has 2 divisors, whose sum is σ = 2917290. Its totient is φ = 2917288.

The previous prime is 2917261. The next prime is 2917303. The reversal of 2917289 is 9827192.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2917264 + 25 = 1708^2 + 5^2 .

It is a cyclic number.

It is not a de Polignac number, because 2917289 - 212 = 2913193 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2917219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1458644 + 1458645.

It is an arithmetic number, because the mean of its divisors is an integer number (1458645).

22917289 is an apocalyptic number.

It is an amenable number.

2917289 is a deficient number, since it is larger than the sum of its proper divisors (1).

2917289 is an equidigital number, since it uses as much as digits as its factorization.

2917289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 38.

The square root of 2917289 is about 1708.0073184855. The cubic root of 2917289 is about 142.8871426044.

Subtracting 2917289 from its reverse (9827192), we obtain a triangular number (6909903 = T3717).

The spelling of 2917289 in words is "two million, nine hundred seventeen thousand, two hundred eighty-nine".